LM74800QDRRRQ1
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Texas Instruments LM74800QDRRRQ1

Manufacturer No:
LM74800QDRRRQ1
Manufacturer:
Texas Instruments
Package:
Tape & Reel (TR)
Description:
3-V TO 65-V, AUTOMOTIVE IDEAL DI
Delivery:
Payment:
iso14001
iso45001
iso9001
iso13485

Product Introduction

Overview

The LM74800QDRRRQ1, produced by Texas Instruments, is an ideal diode controller designed for automotive applications. This device is part of the LM7480x-Q1 family, which includes the LM74800-Q1 and LM74801-Q1 variants. It is AEC-Q100 qualified, ensuring it meets stringent automotive standards. The LM74800QDRRRQ1 operates over a wide input voltage range of 3 V to 65 V, making it suitable for protecting and controlling 12-V and 24-V automotive battery-powered Electronic Control Units (ECUs). It features reverse input protection down to –65 V and drives external back-to-back N-Channel MOSFETs in common drain and common source configurations to emulate an ideal diode rectifier with power path ON/OFF control and overvoltage protection.

Key Specifications

Parameter Min Typ Max Unit
Input Voltage Range 3 65 V
Ambient Operating Temperature Range –40 125 °C
Reverse Input Protection –65 V
Forward Voltage Drop Regulation (LM74800-Q1) 6.8 10.5 13.4 mV
Reverse Detection Threshold –6.4 –4.5 –1.3 mV
Peak Gate (DGATE) Turnon Current 20 mA
Peak DGATE Turnoff Current 2.6 A
Shutdown Current (EN/UVLO=Low) 2.87 µA
Package Type 12-Pin WSON

Key Features

  • AEC-Q100 qualified for automotive applications with a device temperature grade 1: –40°C to +125°C ambient operating temperature range.
  • Device HBM ESD classification level 2 and CDM ESD classification level C4B.
  • Wide input voltage range of 3 V to 65 V.
  • Reverse input protection down to –65 V.
  • Drives external back-to-back N-Channel MOSFETs in common drain and common source configurations.
  • Ideal diode operation with 10.5-mV A to C forward voltage drop regulation (LM74800-Q1).
  • Low reverse detection threshold (–4.5 mV) with fast response (0.5 µs).
  • Adjustable overvoltage protection.
  • Meets automotive ISO7637 transient requirements with a suitable TVS diode.
  • Low 2.87-µA shutdown current (EN/UVLO=Low).

Applications

  • Automotive battery protection.
  • Advanced Driver Assistance Systems (ADAS) domain controllers.
  • Camera Electronic Control Units (ECUs).
  • Head Units.
  • USB HUBs.
  • Active ORing for redundant power systems.

Q & A

  1. What is the operating temperature range of the LM74800QDRRRQ1?

    The device operates over an ambient temperature range of –40°C to +125°C.

  2. What is the input voltage range of the LM74800QDRRRQ1?

    The input voltage range is from 3 V to 65 V.

  3. What type of protection does the LM74800QDRRRQ1 offer against negative supply voltages?

    The device offers reverse input protection down to –65 V.

  4. How does the LM74800QDRRRQ1 emulate an ideal diode?

    It drives external back-to-back N-Channel MOSFETs in common drain and common source configurations to emulate an ideal diode rectifier.

  5. What is the forward voltage drop regulation for the LM74800-Q1 variant?

    The forward voltage drop regulation is 10.5 mV.

  6. What is the peak gate (DGATE) turnon current?

    The peak gate (DGATE) turnon current is 20 mA.

  7. Does the LM74800QDRRRQ1 meet automotive transient requirements?

    Yes, it meets automotive ISO7637 transient requirements with a suitable TVS diode.

  8. What is the shutdown current when EN/UVLO is low?

    The shutdown current is 2.87 µA when EN/UVLO is low.

  9. In what package type is the LM74800QDRRRQ1 available?

    The device is available in a 12-Pin WSON package.

  10. What are some typical applications of the LM74800QDRRRQ1?

    Typical applications include automotive battery protection, ADAS domain controllers, camera ECUs, head units, USB HUBs, and active ORing for redundant power systems.

Product Attributes

Type:N+1 ORing Controller
FET Type:N-Channel
Ratio - Input:Output:1:1
Internal Switch(s):No
Delay Time - ON:2.6 µs
Delay Time - OFF:500 ns
Current - Output (Max):5A
Current - Supply:413 µA
Voltage - Supply:3V ~ 65V
Applications:Automotive, Redundant Power Supplies
Operating Temperature:-40°C ~ 125°C (TJ)
Mounting Type:Surface Mount, Wettable Flank
Package / Case:12-WFDFN Exposed Pad
Supplier Device Package:12-WSON (3x3)
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Similar Products

Part Number LM74800QDRRRQ1 LM74801QDRRRQ1 LM74810QDRRRQ1
Manufacturer Texas Instruments Texas Instruments Texas Instruments
Product Status Active Active Active
Type N+1 ORing Controller N+1 ORing Controller N+1 ORing Controller
FET Type N-Channel N-Channel N-Channel
Ratio - Input:Output 1:1 1:1 1:1
Internal Switch(s) No No Yes
Delay Time - ON 2.6 µs 2.6 µs 850 ns
Delay Time - OFF 500 ns 500 ns 500 ns
Current - Output (Max) 5A 5A -
Current - Supply 413 µA 413 µA 408 µA
Voltage - Supply 3V ~ 65V 3V ~ 65V 3V ~ 65V
Applications Automotive, Redundant Power Supplies Automotive, Redundant Power Supplies Automotive, Redundant Power Supplies
Operating Temperature -40°C ~ 125°C (TJ) -40°C ~ 125°C (TJ) -40°C ~ 125°C (TJ)
Mounting Type Surface Mount, Wettable Flank Surface Mount, Wettable Flank Surface Mount, Wettable Flank
Package / Case 12-WFDFN Exposed Pad 12-WFDFN Exposed Pad 12-WFDFN Exposed Pad
Supplier Device Package 12-WSON (3x3) 12-WSON (3x3) 12-WSON (3x3)

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